Tool for the insertion of studs



. July 25, 1950 J. M. BAGOON TOOL FOR THE INSERTION 0F STUDS Filed March 18, 1948 INVENTOR. JACK M. BAGOOA/ ATTOQA/EYfi Patented July 25, 1950 UNITED STATES PATENT; OFFICE TOOL FOR THE INSERTIDN OFSTUDS Jack M. Bagoon, East Orange, N. J. Application March 18, 194i}, Ser'ial'No. 1 5,689 I This invention relates to tools and more particularly to tools adapted for the insertion of .a stud in the attaching end of a leg for an article of furniture such as a bed box spring.

The object of the instant invention is the provision of a simple and effective tool for the insertion of a stud in a member adapted in turn to be attached by the stud to a second member.

A further object is to provide a means for attaching one member to another that is both durable and quickly accomplished.

Other objects of the instant invention will become apparent in the course of the followin specification.

In the accomplishment of these objectives, the tool is designed for attachment to a drill press or the like. In the base of the tool is a jaw member which releasably retains one end of a stud while turning the opposite end into a member intended for attachment to a second member by the end of the stud released from the jaw member. 3

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawing showing by way of example a preferred embodiment of the inventive idea.

In the drawing:

Figure 1 is a top view of the tool constructed in accordance with the principles of this invention.

Figure 2 is a sectional view along the line 2-2 of Figure l and showing below the tool the means designed to hold the member into which the stud is being turned for the ultimate attachment of said member to a second member (not shown).

Figure 3 is a sectional view along the line 33 of Figure 2.

Figure 4 is a sectional view along the line 44 of Figure 2.

2Claims. (01.81-53) Referring now in greater detail to the drawings in which like reference numerals indicate.

like parts, reference numeral l l indicates thestud,

l2 the member into which the studis being inserted, l3 the vise-like block for holding the memher while the stud is being turned therein, and i M a portion of a drill press to which the tool is attached and by which it is actuated.

The tool is formed of the driver 3|, the driven member IS, the housing H, the opposed jaw able manner for attachment to a drill press and. at the base with the collar l 9a. Of course, Qther means than a drill press for "imparting'angular velocity to the tool could be designed' In the base of the collar I901. of the "driver 3| is the keyway IQ for insertion of the subsequently described key 20 (Figs. 2 and 3) of the driven member 16. I

The driven member IE is substantially a hollow cylindrical member with closed top on which the key 20 is disposed for fittin into the abovementioned keyway IQ of the driver 3|. Toward the top of the driven member I6 (Fig. 2) is the recess 22 extending around the outside surface portion and into which one or more set screws 22a through the housing l7, later described, are partially inserted. At the base of the driven member H5 is the locking taper 21 in opposed relationship. The opposed ends of the driven member I 6 and locking taper 2'! are grooved for insertion of the ball bearings 29. The locking taper 21 is maintained in the opposed position by the locking ring 21a which is secured to the driven member [6 by one or more suitable fasteners 24 inserted in registering apertures 01' the respective members. In the base of the locking ring 21a is an aperture for insertion of the jaw members 28 and 28a.

The jaw member is formed of thetwo opposed members 28 and 28a designed to be fitted upwardly through the bottom of the driven member-l6. At the base, the opposed surface portions of the members 28 and 28a are threaded for the insertion of the stud II which is inserted through aligned apertures in the bases of the locking ring 21a and bottom supporting member l8, subsequently described. The outside surface portions of the opposed jaw members 23 and 28a at the base are tapered to co-act with an inside tapered surface portion of the locking taper 21 so that as-the jaw members are pushed upwardly into the driven member 15 the opposed surface portions of the jaw members tend to approach each other and to hold a member inserted therebetween, such. as the stud H, with a substantial grip. Near the center of the opposed jaw members 28 and 28a are the opposed recesses 25a and 25b into which the pin 25 is inserted and which. serves as a pivotal means for the movement of the upper and lower portions of jaw members 28 and 28a toward and away from each other. An aperture through the pin 25 supports the screw 24, inserted vertically along the vertical center line of the jaw members 28 and 28a, and threaded at the base for attachment to the member 32 as shown in Figure 2. The member 32 is, in turn, inserted in co-acting recesses in the opposed,

jaw members, and aids in maintaining the same separated at the base when out of the driven member IS. The coiled spring member 26 maintains the screw 24 in position and may be adjusted by a screw driver through the opening IS in the top of driven member [6 as shown in Figure 2. At the top of each of the opposed jaw members 28 and 28a are the recesses 23 and 23a 7 Into the recess 23a is inserted the ball bearin 23b and into therecess 23, the ball bear-.- ing 230;" the ball bearings 23b and 230 being held in apertures formed in the walls of the driven,

member l6 and providing anti-friction surfaces.

Similar recesses and ball bearings: aredisposedy.

at the base of the opposed jaw members 28 and 28a as shown in Figure 2. The width of there 1 cesses into which the ball bearings are. disposed,

at the top is sufiicient to permit the necessary vertical movement of the jaw members 28 and 2 8a; inandout cof the base of ithe driven member lfiszas; later shown.

Concentricv with the driven member 16 and around-the outside thereo-fis the housing." re- Inov-ably: attached to the collar lBa of-the driver 3| by the cap 2! which is supported by theupper edge of 'thelcollar IBa'arld then threaded over the upper end-of the housing I! while being held in place by'the locking ring 30. Both the -cap'2-l and the locking ring: are adjustable by a spam ner wrench or the like.

Atthebase of the tool lflvis the bottom-support ing member l8- designed'to be threaded on the base ofthe housing I! and held securely in place by thelocking ring-33 as shown in Figure 2 In the'base of the bottom supporting member I8 is an aperture which registers I with the vertical center :line of the jawmembers 28-and28a and is designed for the insertion of thestud 1'] there through. i

Below the tool is, for example, a leg I2 for-any piece-of furniture and held from rotating by bemg inserted in-a co-acting aperture in the viselike block I3. The vise-like block 13 is secured to any suitable supportby the screw 34 'or the like. Of course, other methods for maintaining the leg [2 nonrotatab1'e could be designed.

The operation is as follows: The top of the leg I2 is'inserted in a co-acting aperture in the viselike'block- 13. The tool is inserted in the drill press [4, the vertical center lines of the drill press, tool, and leg being substantially aligned. The stud H, preferably ofhardmetal, is then insertedthrough the base of the bottom supporting member l8 between the jaw members-28 and 28a forcing-them upwardly into the driven member I6 and thereby maintaining a tight grip on the stud H by virtue of the tapered surfaces of said jaw members co-acting with the tapered surface of the locking taper 21. Rotary motion is then imparted to the tool which turns the stud, H into the leg l2 either by permitting the leg [2 to travel upwardly while being maintained nonrotatable or by permitting the tool to travel downwardly until the opposed surfaces are in contact. When in contact, the housing [1 and bottom supporting member 18 will tendto cease rotating, Thereafter, the driven member l6 and jaw members Z'B'and 28a will continueto rotateand move downwardly until the set screw 22a reaches the top of'the recess 22 whereupon the driven member l6 will cease tomove downwardly but the jaw members 28 and 28a will continue torotate and move downwardly until the downward motion forces the members -2 8 and--28a*out ofcontact 4 j with the locking taper 2T automatically releasing the stud H and permitting the member 32 to move downwardly by action of the spring member 26 thereby maintaining the jaw members 28 and 28a separated.

It is apparent that the specific example shown above has been given by way of illustration and not by way of limitation and that the structures abovedescribed are subject to wide variation and modification without departing from the scope or intent of the invention, all of which variations and modifications are to be included within the scope of the present invention.

What-is claimed is:

, l, ,A tool for inserting studs comprising a driver, a driven member, a jaw member, a housing; and a. bottomsupporting member; the driver comprising a cylindrical body portion and adapted at the top for attachment to a drill press, a collar around the base ofv the cylindrical body portion,; and a' keyway-alcng the bottom surface portion'of-thecollar; thedriven member comprising asubstantiallyhollow cylindricalbody portion with-closed-tom'a keyon the top surface portion of the closed top of the hollow cylindrical body portion and adapted to be fitted'into-the keyway ofthe driver; a lochl'ng'taper disposed in opposedrelationship at'the base of'the driven member; anti-frictionmeans between the opposed surfaces of said members; and 'means securing the locking taper at the end of the driven member; the jaw member comprising at least two pivotallyopposed members and adapted for insertion through the base of the driven member; the outside'su-rface-portions-of the-jaw members being tapered to-co-aet with the tapering surface of the-locking taper and adapted tobring the-bases ofthe jaw members together when pushed upwardly into the driven member, the opposed surface portions of the-jaw members beingthreaded atthe base and' adapted' forthe insertion of the stud; the housing comprising a substantially hollow cylindrical body portion with opentop disposed around the collar of the driver and extending; downwardly toward the base of the-driven member, means securing the housing to the collar of the driver comprising a cap disposed around the collar and threaded over the upper outside surface portion of the housing, and a lock ring disposed around the housing co-acting with the cap in maintaining the same in position; a bottom supporting member removably disposed around'the base of the housing and adapted to provide a space between the bottom surface portion of the retaining ring and. bottom surface portion of the bottom supporting member, and a locking ring adapted to maintain the bottom supporting member imposition on the housing; the tool'further comprising vertical adjustment means for the driven member comprising a recess substantially at the top of the driven member and extending around the outside surface portion thereof, atap through the housingaligned adapted to pivot the tops and bottoms of the opposed jaw members toward and away from each other, and an aperture through the pin; the said means further comprising co-acting recesses along the opposed inner surface portions of the a jaw members substantially at the base, said recesses having a substantially greater diameter at the top than at the bottom, a member removably disposed in the latter recesses and adapted to aid in maintaining the opposed jaw members separated when released from the looking taper, a screw through the aperture in the pin and threaded into said member, and spring tension means maintaining the screw in the desired position.

JACK M. BAGOO-N.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,807,264 Walker May 26, 1931 1,807,265 Walker May 26, 1931 1,817,049 Weil Aug. 4, 1931 1,825,876 Leiter Oct. 6, 1931 2,086,167 Lamb July 6, 1937 2,216,557 McKean Oct. 1, 1940 2,251,491 Lozen Aug. 5, 1941 2,390,034 Walker Nov. 2'7, 1945 

